Because a tankless water heater responds directly to your demand for hot water, correct sizing is very important. If you select a small tankless water heater, but have a large hot water demand, you will not be satisfied with the results. Also, because ground water temperatures are lower when you live in a cool/northern climate, you need a more powerful tankless electric water heater than if you lived in a warm/southern climate. It's all about sizing the correct unit for the job—and we're here to help with that.

Use this online sizing guide to help you determine which AquaPower^® model is right for your needs. Whole house models need much more power to provde hot water to showers, tubs, etc. Point-of-use models are less powerful and not suited to major applications such as standard-flow showers and tubs.

We encourage you to call us at 800.582.2213 if you are unsure which model is correct for your application or have any sizing related questions. DHE Series Whole House Sizing Guide

AQM Series Point-of-Use Sizing Guide

AQC Series Point-of-Use Sizing Guide

AQE Series Multi- Point-of-Use / Whole House Sizing Guide

Whole House Tankless DHE greatest capability AQE ideal for cabins, warm climates Point-of-Use Tankless AQM tiny package, big performance AQC versatile workhorse AQE electronic multi- point-of-use